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Unique identifier. A unique identifier ( UID) is an identifier that is guaranteed to be unique among all identifiers used for those objects and for a specific purpose. [1] The concept was formalized early in the development of computer science and information systems. In general, it was associated with an atomic data type .
Unique user. Website popularity is commonly determined using the number of unique users. "Unique" refers to the number of distinct users to a website and does not count repeat visits to a website by the same user. [1] [2] A website's number of unique users is measured over a standard period of time. The metric is often quoted to potential ...
User identifier. Unix-like operating systems identify a user by a value called a user identifier, often abbreviated to user ID or UID. The UID, along with the group identifier (GID) and other access control criteria, is used to determine which system resources a user can access. The password file maps textual user names to UIDs.
Manage your AOL username. Your AOL username is the unique identity that gives you access to services like AOL Mail or premium services. For AOL email addresses, your username is the first part of the email address before the @ symbol. For non-AOL email addresses, your username is the entire email address.
Universally unique identifier. A Universally Unique Identifier ( UUID) is a 128-bit label used for information in computer systems. The term Globally Unique Identifier ( GUID) is also used, mostly in Microsoft systems. [1] [2] When generated according to the standard methods, UUIDs are, for practical purposes, unique.
Advertising ID. An advertising ID is a unique user ID assigned to a mobile device (smart phone, tablet computer ), or operating environment, to help advertising services personalize their offers. [1] It can be sent to advertisers and other third parties which can use this unique ID to track the user's movements, habits, and usages of ...
Personal Identifiers ( PID) are a subset of personally identifiable information (PII) data elements, which identify an individual and can permit another person to "assume" that individual's identity without their knowledge or consent. [1] PIIs include direct identifiers (name, social security number) and indirect identifiers (race, ethnicity, age).
Identity correlation is, in information systems, a process that reconciles and validates the proper ownership of disparate user account login IDs ( user names) that reside on systems and applications throughout an organization and can permanently link ownership of those user account login IDs to particular individuals by assigning a unique ...